Buggy code:
public abstract class Achievement extends FinName { protected static final Achievement [ ] ALL = new Achievement [ ] { new Achievement . LevelFeat ( "Level<seq2seq4repair_space>1" , 1 ) , new Achievement . LevelFeat ( "Level<seq2seq4repair_space>Champ" , 50 ) , new Achievement . WorldFeat ( "World<seq2seq4repair_space>1" , 1 ) , new Achievement . WorldFeat ( "World<seq2seq4repair_space>Tour" , 10 ) , new Achievement . NoEnemyFeat ( ) , new Achievement . AllEnemyFeat ( ) , new Achievement . RankFeat ( "Promoted" , 2 ) , new Achievement . RankFeat ( "Knighted" , 25 ) , new Achievement . WordFeat ( "Wordsmith" , 5 ) , new Achievement . WordFeat ( "Lexicon" , 30 ) , new Achievement . MonarchFeat ( ) , new Achievement . PegasusFeat ( ) , new Achievement . GemFeat ( "Entrepreneur" , 10000 ) , new Achievement . GemFeat ( "Tycoon" , 100000 ) , new Achievement . GemFeat ( "Millionaire" , 1000000 ) , new Achievement . GreenGemFeat ( ) , new Achievement . BumpFeat ( "Thud" , 1000 ) , new Achievement . BumpFeat ( "Thump" , 5000 ) , new Achievement . BreakFeat ( "Wreckage" , 600 ) , new Achievement . BreakFeat ( "Devastation" , 1500 ) } ; private final String desc ; private final int award ; protected Achievement ( final String name , final String desc , final int award ) { } public final String getDescription ( ) { } public String getProgress ( final PlayerContext pc ) { } public String getNote ( ) { return null ; } public final int getAward ( ) { } public abstract boolean isMet ( final PlayerContext pc ) { } public static final void evaluate ( ) { } public static final void evaluate ( final PlayerContext pc ) { } private static abstract class ProfileFeat extends Achievement { protected ProfileFeat ( final String name , final String desc , final int award ) { } @ Override public final boolean isMet ( final PlayerContext pc ) { } public abstract boolean isMet ( final Profile prf ) { } } private static abstract class CountFeat extends Achievement . ProfileFeat { private final int n ; protected CountFeat ( final String name , final int n , final String desc , final int award ) { } @ Override public final boolean isMet ( final Profile prf ) { } @ Override public final String getProgress ( final PlayerContext pc ) { } public abstract long getCurrent ( final Profile prf ) { } } private static abstract class StatFeat extends Achievement . CountFeat { protected StatFeat ( final String name , final int n , final String desc , final int award ) { } @ Override public final long getCurrent ( final Profile prf ) { } public abstract long getCurrent ( final Statistics stats ) { } } private static abstract class AvatarFeat extends Achievement . ProfileFeat { protected AvatarFeat ( final String name , final String desc , final int award ) { } @ Override public final boolean isMet ( final Profile prf ) { } public abstract boolean isMet ( final Avatar avt ) { } } private static abstract class CurrentFeat extends Achievement { protected CurrentFeat ( final String name , final String desc , final int award ) { } @ Override public final boolean isMet ( final PlayerContext pc ) { } public abstract boolean isMet ( final Player player ) { } } private static final class LevelFeat extends Achievement . StatFeat { protected LevelFeat ( final String name , final int n ) { } @ Override public final long getCurrent ( final Statistics stats ) { } } private static final class WorldFeat extends Achievement . StatFeat { protected WorldFeat ( final String name , final int n ) { } @ Override public final long getCurrent ( final Statistics stats ) { } } private static final class WordFeat extends Achievement . StatFeat { protected WordFeat ( final String name , final int n ) { } @ Override public final long getCurrent ( final Statistics stats ) { } } private static final class GemFeat extends Achievement . StatFeat { protected GemFeat ( final String name , final int n ) { } @ Override public final long getCurrent ( final Statistics stats ) { } @ Override public final String getNote ( ) { <START_BUG> return "Total<seq2seq4repair_space>ever<seq2seq4repair_space>found,<seq2seq4repair_space>spending<seq2seq4repair_space>won't<seq2seq4repair_space>lower<seq2seq4repair_space>total" ; <END_BUG> } } private static final class GreenGemFeat extends Achievement . StatFeat { protected GreenGemFeat ( ) { } @ Override public final long getCurrent ( final Statistics stats ) { } } private static final class BumpFeat extends Achievement . StatFeat { protected BumpFeat ( final String name , final int n ) { } @ Override public final long getCurrent ( final Statistics stats ) { } } private static final class BreakFeat extends Achievement . StatFeat { protected BreakFeat ( final String name , final int n ) { } @ Override public final long getCurrent ( final Statistics stats ) { } } private static final class RankFeat extends Achievement . CountFeat { protected RankFeat ( final String name , final int n ) { } @ Override public final long getCurrent ( final Profile prf ) { } } private static final class MonarchFeat extends Achievement . AvatarFeat { protected MonarchFeat ( ) { } @ Override public final boolean isMet ( final Avatar avt ) { } } private static final class PegasusFeat extends Achievement . AvatarFeat { protected PegasusFeat ( ) { } @ Override public final boolean isMet ( final Avatar avt ) { } } private static final class NoEnemyFeat extends Achievement . CurrentFeat { protected NoEnemyFeat ( ) { } @ Override public final boolean isMet ( final Player player ) { } } private static final class AllEnemyFeat extends Achievement . CurrentFeat { protected AllEnemyFeat ( ) { }

Fix:
return "Total<seq2seq4repair_space>ever<seq2seq4repair_space>found,<seq2seq4repair_space>spending<seq2seq4repair_space>won't<seq2seq4repair_space>hurt" ;